[PD] pix_film alpha in Linux

[Matteo Sisti Sette]

Hi,

I'm trying this:

[pix_film]
  |
[pix_texture]
  |
[alpha]
  |
[rectangle]

I'm using some videos that have an alpha channel and I had tried them 
previously in Windows and Mac and they were rendered correctly with 
their transparent background.

Now I am trying the same in Linux and the videos are opaque, as if they 
didn't have an alpha channel or as if they had an opaque black background.

I've already tried sending "colorspace RGBA" to pix_film, but nothing 
changes.

I'm almost sure the videos were encoded with the Apple Animation+ 
encoder but if i right-click them in Ubuntu and select "properties" it 
says "run-length encoder". What is sure is that i tested them in Windows 
and Linux and used to work.

Any idea?

thanks
m.